626340 has 96 divisors (see below), whose sum is σ = 2088576. Its totient is φ = 138240.

The previous prime is 626333. The next prime is 626341. The reversal of 626340 is 43626.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626341) by changing a digit.

626340 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8544 + ... + 8616.

It is an arithmetic number, because the mean of its divisors is an integer number (21756).

2⁶²⁶³⁴⁰ is an apocalyptic number.

626340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1044288).

626340 is an abundant number, since it is smaller than the sum of its proper divisors (1462236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

626340 is a wasteful number, since it uses less digits than its factorization.

626340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 626340 is about 791.4164516865. The cubic root of 626340 is about 85.5598568579.

Adding to 626340 its reverse (43626), we get a palindrome (669966).

The spelling of 626340 in words is "six hundred twenty-six thousand, three hundred forty".